Nut lock



l vJuly 27,1926, 1,594,088,

' E. E. BACHMANN NNNNN CK' pnl 2v, 192'@ mgm y Pareniealiuiy 27,' ieee.

UNITEDASTM nnwrii' n. Bifi'orriviniiii, or BALrriiiionniuARYLAi-in NUT Looinrr plantation ieaAprii-e, 192e. semaine. 99,293.

My presentfiiiventionpertainsto nut locks of the type in which the nut is keyed vto its complementary bolt; audit has for its Vob'- lpartly in elevation, of aconstruction'r ein#V Figure l isa view, partlyin. section and bodying one form of my invention.

-f the'nutfand key of` my improvement, n Figure 4 is a vivevirrtaken inthe plane in- Figure 2 is a full section of the saine. if...

lFiguie' 3 `is av vievvftakenv from `a "View point at the righty of Figure land showing i' dicated by the'fline 4e-l of `Figure 2,: and

p key per se.

showingthe inner `side ofthe novel nut and the manner `in which lthe ends of ythe. il` shaped key are anchored in and to' the nuti. Figure gislan' enlarged perspective of .the

nutperse.` y Figure 6 is a perspective of the Uv-shaped Figure' isa vieivsiniilar'to Figure 3 and showing a simplified formof the invention. Similar numerals designate corresponding *i parts in Figures l-G to Which reference Will first be made.

Maniiestly my novel nuty lockinay' beusedv to advantage in various relations'. I'have elected, however, to show the bolt 1` as ythreaded into a cylinder body4 2,. andas passed through a cylinder head 3 and equipped on its outer threaded'portion with an ordinary `nut l and my novel nut 5; rlh'e bolt l is piovidedin its exposed end portion with crossed diametrical kerfs or slots 6, and

thenut 5 is peculiar' in that it has a .circular series of spaced apertures 7 rwhich extend transversely'.through it, Figure y2, and in that it is provided with grooves 8 in itisface, Figures'l-S and 5, and with a circular channel 9 in its inner side. The grooves 8- eX-y tend radially outwardvr from the bore ofthe nut 5 and communicate with. the'outen ends of the apertures 7 endlwould also h ave itA understood that f for reasons Aof facility in -manufacture I `prefer to extend said grooves.

to the outer edge ofthe nut as illustrated in l.Figures 1-3 and 5. Ashshown in Figure 4 the channel 9 is shallow'andis in communication.vvith the'inner ends of .the {several apertures 7.

@ Nl 'of Flc-Ei vl The hereinbefore mentioned key of myL im'- provenienti is formed in .oney piece of readily,`

bendable 'metal or alloy," as designatedby 10 in Figure 6, isU- sha'ped in generalv configuration,and. is provided in its end portions key; the mouths ofthe said bifurcations being'iiared aspdesigiiatedby'lQ.

ln the practical use rof theform thus far described in detail, the nut 'is turnedlon the bolt-l and'v tight'y against the face of the fbolt for any'f'otlier abutment that maybe present.I The key lOis then inserted so-that its legs are sheathed inidiametric'allyv opposite apertures l of .the nut, its cross bar is seated andin one slot 6 ofthe bolt,:,a'nd its ends are opposed tothe abutment afforded by the face of lthe `nut fl. l '.llhe. key ylegs `are-.then forcedy with diametri'c'al bifurcationsll occupying the center of .the longitudinalplane of the in diametiica'lly: opposite grooves 8 'of the nui. y

cndwisev inwardly `inl the knut vapertures 7, v

bifurcations Will be `upset inopposite directions in the channel 9 and in the direction .whereupon/by virtue Aofthe disposition-of the bifurcationsll, and the ,-'ilaredvmouths 12.0.fsa'id bifurcations, the arms 13 of' the ofthe length of said channel, Figure lair/ith 1l the result that the key Will be strongly an.- chored of itselfv in thev nut and this'ivith all "of the key'in the bolt and nutfso lthat the nut and key are strongly heldy together, and

Vthe nut is strongly locked to thebolt and against casual turning to any extent thereon. l Apunch applied to the bends ofjthekey *in alinement with the key legs may be and preferably is utilized for the described forcing' of the key legs endwise inwardly, lthe punch beingsubjectedlto hammer blows or otheririse powerfully applied to the keyv to `bring about they described `upsetting' of the key ends against an opposed abutment-anc y inthe' channel 9 of the nut. f g

Manifestly the pluralityv of apertures `7 and the plurality of grooves 8 together with crossed slots 6j in the bolt end, lend themselves'to nice adjustment of the nutE and locking of the nut to the bolt atclosely arranged points in the length `ofl the bolt. f

ieu vthe circularl channel 9 in thenut, vand the me" A* The bolt la ofthe simple and inexpensive lembodiment yshorvn in 'Figurev is pro/ided VWith a single slot 6?, 'thelrey lOais'identical With the key 10,--Figure 6, and the nut 5 is similar to the ynut 5, Figure 5, save that'4 it hasno grooves such-as 8, itszaperturesfy ex# tending, to the face.ofthe nut. j InV other re# spects, however, the nut 5a is like the nut 5, and .hence the simpliication disclosed in Figure 7 is possessed of the major practical advantages hereinbefore ascribed to the embodiment illustrated in Figures le.

Having described my invention, what Iv claim and desire to secure by Letters-Patent, is1- l. ln a nut locl and in combination, a threaded bol-t with crossed slots in its end por-tion, a nut having a threaded bore and also havingv a circular `series et spaced apertures about said here and further having radial grooves in its tace and in communication with said bore and apertures and a legs are forced inwardly against an abut-A ment opposed to the inner side oit the nut,` the arms ot said biiurcations will be spread apart and seated in said circular channel to anchor the lrey legs to and in the nut.

2. In nut lock and in combination, a threaded bolt with a slotted end portion, a

nut having a threaded bore and also having a circular series of spaced vapertures about said bore and further having,` radial grooves in its face and in communication with said bore and apertures and a circular channel in its inner side about the bore and in communication with the inner ends of the apertures, and a U-shaped hey of bendable metal, whereby when the key is seated in the bolt slot and the nut grooves coincident therewith and the key legs are sheathed in opposite apertures of the nut and the key legs are forced inwardly against an abutment opposed vto the inner side oit the nut, the ends o' said legs will be upset in said channel to anchor the legs to and in the nut. n

3. In a nut lool; and in combination, a threaded 'bolt with a cross slot in its end portion, a nut havingi a threaded bore and also having a circular series oi.: spaced apertures about said bore and further having a circular channel in its inner side about said bore and in communication with the inner ends ol the apertures, and. a U-shaped key ott' bendable metal, whereby whenv the lrey is sea-ted in the bolt slot and the key lege are sheathed in opposite apertures orn the nut and the key legs are forced inwardly against an abutment opposed to the inner side of the nut, the ends or said legsl will be upset in said channel .to anchor the legs to and in the nut. f

ln testimony where-of, I aliix my signature.

EDVINy E. BACHMANN. 

